Improvement in permutation-locks



' 38h --Sh L JAMES T. ADAMS. ee t lmprovemeht in Permutation-Locks.

NO. 114,510A Patented May 9,1871.

3 Sheets--Sheet 2.

JAMES-T1 ADAMS. lmprovemen in PeFmQtatOn-LQCRS. 110.114,510. Patented May 9,1871.

17a. gala JIM @a ash JAMES TAMA/1s. ee Sheets Improvement in Permutaon-Lncks.

N0.114,510 Patented May9,1871.

v4 Man?? itat %trin anni (tutti.

TO JOEL RQLEIDY, OE PHILADELPHIA, PENNSYLVANIA.

neuem Patent No. 114,510, dated May 9, 1871.

IMPROVEMENT IN PERMUTATION-LOCKS.

The Schedule referred to in these Letters Patent and malring part of the lame.

To all whom 'it may concern:

Be itl known that I, JAMES TL'ADAMs ofthe city and county of Washington, in the District of Columbia, have invented certain new and useful Improvements in Permutation-Locks; and I, do' hereby declaro that thefollowing is a full, clear, and exact de scriptipn thereof, reference being had to the accompanying drawing through letters ofreference marked thereon, in which Figure 1 is an outside view of a lock embracing my improvements Figure `is a reverse ,view ofthe same;

Figure 3 is an edge view thereof;

Figure 4 is an inverted view of the cap or face-plate removed; y l

'Figures to 53 inclusive are detail views of the several parts jof the .lock detached; land Y A'Figure 54 is a section on the line x x on g. l.

My invention has for its base the lock patented by (Jreorgev B.'Atwood, assigner toy Alfred A. Oats, dated March 26, 1861, and numbered 63,133, in records of the United States Pant Omoo, on which this is an improvement; it will therefore he unnecessary to describe in detail all the mechanism common, to both. I shall therefore `only particularly describe those portions-in which my improvements exist, 'which consist mainly in a compound arrangementof eccentrics for operating the locking-bolts which secure 'the main bolt-operating devices, .whereby extended combinations .are `obtained'and greater accuracy is required in the adj,ustrnentV of the permutation-disks,and consequent increased security is obtained.

The invention also embraces an application to the key-hole plug vof two or more eccentric rings attached to and making part of said plug.

In the patent of Atwood heretofore referred to the locking-bolts are provided with 'rectangular stirrups, i

the rotation of lthese eccentrico, having comparatively but an edge bearing on the yoke, very soon wear the part on which they strike, or with which they come in contact, to such an extent that, by delicate touch and manipulation, the precise position of the bolt affected thereby may be accurately ascertained.

To remedy this objection is the design of my present invention, which consists in a combination ofv eccentrios, one within the other, operating to withdraw or protrude the radici lochingboits by rotating them Within circular straps. These eccentrics are each controlle'd by rotating dials on the face of the lock; also, in a-combination of ecoentiics and eccentric-rings with the key-hole plug, which eccentrics are operated by a. series of dials or exterior disks, by which the said 1rings may be arranged concentric with the plug, orbe caused `to protrude beyond its periphery into annular channels around the keyhole, and .thus increase the diiiiculty of removal of the plug.

Referring to the drawingi `Fig.V 51 represents the key-hole plug A secured in position within the key-hole hy means'of one or more radialbolts, a, projected into agroove, b, around the plug, together with the laterally-displaced eccentric rings c entering the annular grooves ,d in the .key-hole.

On the stern e of the plug is an eccentric formation, f, and on its sleeve, g', is another eccentric, j' around which the eccentric rings, figs. 21,22, `25, and 26, rotate ,by the action of the segmental wing g on the sleev'g being .brought in contact with the stubs hon said rings, so that, by rotating the respective indexcollars i i', the rings c, having eccentric openings lthrough them, arerotated around their Veccentric arbors, and may be arranged ftbereon so that their peripheries coincide with the cylindrical periphery of the plug A, or be'extended laterally beyond its periphery to interlock with the grooves d.

The lower plug, represented in igs. 43 and 44, through which the key, fig. l, `operates to shoot or withdraw the bolt, is situated in the same axial line below the key-hole plug. Itis supported and projected, when liberated for action, by a spring around the stem j, andis locked down by a bolt or bolts, la, entering an annular groove in its periphery.

. 'These bolts are arranged radially around the axis i of the plug, and are operated by the rotation of tbespindlev l, rigs. l0 and 54, by an eccentric, s, at its lower end.

' On this spindle Z is also a. blind or hidden eccentric` m carrying on its periphery an eccentric ring, p, fig. 49, which is adjustable within the loop or strap n, dg. 46, of the bolt c, by means of' the stub z on the sleeve y, gs. 10 and 54,

The advantages of this eccentric construction of the operating parts are, mainly, that their action is so smooth and delicate that the position of any internal.

parts cannot possibly be discovered by the sense of feeiing ,iv also, that the relative position of the one eccentriom within the other p is susceptible of such delicate adjustment that almost innumerable comwill be embraced in an application for Illetterss Patent 2. The combination of the eccentric ring p, made for additional improvements made'by the assignees adjustable within the loop n of the bolt k, with the hereof in a'nother application. hidden eccentric m on the spindle l, substantially as What is here claimed as bemand desired to be seand-for the nurnose specied. i cured by Letters Patent, is JAS. T. ADAMS.

1. The combination of the eccentrcf on the stem e, andcccentric f' on the sleeveg, of' the key-hole Witnesses:

plug,z with the eccentric rings c, and winged sleeve g', JOS. TQK. PLANT, for operation substantially as set forth. G.- J.4 L. vFOXWELL. 

